tridge
Member
In a VTOL aircraft like a quadplane momentum drag from vertical rotors is very important for slowing down the aircraft in a back-transition. I can't seem to get this to model at all realistically, testing in RF9.5.
I've been testing on this model:
We use a trick in ArduPilot where we startup the VTOL motors early to slow the plane before we start the descent for landing. I'm not seeing the deceleration that I expect.
Looking at the physics settings in RF9.5, there is a "Lateral Drag Factor (%)", but raising that to 200 doesn't seem to have any impact. Maybe it doesn't work for rotors that are rotated to point up?
I also notice that in the builtin E-Flite convergence model that this factor is set to zero which seems odd.
Is there some way to get the lateral drag effect of the spinning rotors working for this type of aircraft?
Cheers, Tridge
I've been testing on this model:
SITL_Models/RealFlight/Released_Models/QuadPlanes/Alti_Transition_QuadPlane at master · ArduPilot/SITL_Models
Models of aircraft for SITL. Contribute to ArduPilot/SITL_Models development by creating an account on GitHub.
github.com
Looking at the physics settings in RF9.5, there is a "Lateral Drag Factor (%)", but raising that to 200 doesn't seem to have any impact. Maybe it doesn't work for rotors that are rotated to point up?
I also notice that in the builtin E-Flite convergence model that this factor is set to zero which seems odd.
Is there some way to get the lateral drag effect of the spinning rotors working for this type of aircraft?
Cheers, Tridge